Home / 74,133.30-102,303.93-40,141.78

Finding the Fourth Proportional to 74,133.30, 102,303.93 and 40,141.78

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Solution

The fourth proportional to 74,133.30, 102,303.93 and 40,141.78 is: 55,395.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,133.30 : 102,303.93 = 40,141.78 : x
  2. Step 2: Convert to fraction form
    74,133.30/102,303.93 = 40,141.78/x
  3. Step 3: Cross multiply
    74,133.30x = 102,303.93 × 40,141.78
  4. Step 4: Simplify right side
    74,133.30x = 4,106,661,851.20
  5. Step 5: Solve for x
    x = 4,106,661,851.20/74,133.30
  6. Step 6: Final answer
    x = 55,395.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.